S355JR Carbon Steel Plate — Factory Direct Supplier | Huaxia-Steel

S355JR carbon steel plate is a structural grade to EN 10025-2 with a minimum yield strength of 355 MPa and guaranteed impact toughness at +20 °C. It is the most widely specified grade for building frames, bridges, machinery bases, shipbuilding and general fabrication. Huaxia-Steel supplies S355JR plate in a full range of thicknesses, widths and lengths with EN 10204 3.1 mill certificates and optional third-party inspection.

Product Overview

Our S355JR plates are produced from killed steel by fine-grain practice and supplied as-rolled or normalized. The grade offers excellent weldability, good machinability and consistent mechanical properties, making it suitable for welded structures and structural components exposed to moderate temperatures.

Specifications and Tolerance

Item	Specification
Standard	EN 10025-2
Grade	S355JR
Yield strength min	355 MPa
Tensile strength	470 – 630 MPa
Thickness	5 mm – 300 mm (custom up to 400 mm)
Width	1,500 mm – 4,500 mm
Length	3,000 mm – 18,000 mm; cut-to-length
Tolerance	EN 10029 Class B, ASTM A6/A20 on request
Surface	As-rolled, shot blasted, pickled, oiled

Mechanical Properties

Property	t ≤ 16 mm	16 < t ≤ 40 mm	40 < t ≤ 63 mm
Yield strength ReH	≥ 355 MPa	≥ 345 MPa	≥ 335 MPa
Tensile strength Rm	470 – 630 MPa	470 – 630 MPa	470 – 630 MPa
Elongation A5	≥ 22 %	≥ 21 %	≥ 21 %
Impact energy	≥ 27 J @ +20 °C	≥ 27 J @ +20 °C	≥ 27 J @ +20 °C

Equivalent Grades

S355JR is recognized internationally under several designations. Cross-referencing helps buyers who design to ASTM, JIS or GB standards.

EN	DIN	UNI	Old DIN	GB
S355JR	1.0045	Fe 510 B	St 52-3 U	Q355B / Q345B
S355J0	1.0553	Fe 510 C	St 52-3 N	Q355C
S355J2	1.0577	Fe 510 D	St 52-3 N	Q355D

Applications

• Building frames, columns and beams.
• Bridge components and highway structures.
• Machinery bases, platforms and support structures.
• Shipbuilding and offshore modules.
• Wind tower sections and transmission towers.
• Tanks, silos and general fabrications.

Quality Assurance

Each plate is traceable to the originating heat. We provide EN 10204 3.1 mill certificates as standard and can arrange 3.2 or third-party inspection by SGS, TÜV or BV. Tests include chemical analysis, tensile test, hardness, Charpy impact at +20 °C and ultrasonic testing to EN 10160 on request.

Packing and Shipping

Plates are separated by wooden separators or plastic film, strapped with steel bands and loaded on flat racks or in open-top containers for breakbulk shipment. Edge protection and lifting lugs are available for large plates.

Need a reliable carbon steel supplier for your next project? Huaxia-Steel supplies mill-certified carbon steel bars, plates, pipes, flanges and fittings with full inspection, export packing and fast delivery. Request a quote today and our team will reply within 24 hours.